The zoom in option displays a smaller viewing area of the
graph by magnifying a portion of the graph around the current cursor location. While viewing a graph, press
.

Press .

The location of the cursor will be the center of the magnified graph. The coordinates of the
cursor appear at the bottom of the screen. Use the cursor to move the blinking
cursor to the desired center and press
. The window settings are adjusted and the function
is graphed in the new window.

To zoom in more, press again. To exit press .

Note: The factor by which the graph is magnified is determined by the x factor and y factor
settings.